It is also true, that, talking about the membership of this one true religion, it is not one. It is many, more than one. So as when we talk about the talents, functions, local churches, organizations, it's in DIVERSITY.
But talking about FAITH or RELIGION it is ONE (Ephesians 4:5). For God is not the author of confusion. He is not the author of divisions. He is the author of UNITY (John 17:21-22).
It is a must to find this ONE TRUE RELIGION, among the FALSE RELIGIONS.
It is not easy to indentify the false religions. For even Satan disguises himself as an angel of light (2 Corinthians 11:14).
Yes, there is the what we call FALSE ONE WORLD RELIGION, a fantasy one. But there is also a prophecy in the bible, that all will be one. Meaning, all will be converted to the TRUE ONE UNIVERSAL RELIGION (Daniel 2:44; Matthew 24:14; John 17:21-22; John 10:16). We don't know when will this to happen. But surely it will happen. For with God nothing shall be impossible (Luke 1:37).
And now the making of this one universal religion is ongoing. And maybe, your the one of the architects, engineers or workers of it. And you should be proud of it.